/*
 * Copyright 2022 Han Xin, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package fuse2grpc

import (
	"context"

	grpc_logrus "github.com/grpc-ecosystem/go-grpc-middleware/logging/logrus"
	"github.com/hanwen/go-fuse/v2/fuse"
	log "github.com/sirupsen/logrus"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/status"

	"github.com/chiyutianyi/grpcfuse/pb"
)

func (s *server) CopyFileRange(ctx context.Context, req *pb.CopyFileRangeRequest) (*pb.CopyFileRangeResponse, error) {
	var (
		header fuse.InHeader
	)
	grpc_logrus.Extract(ctx).WithFields(log.Fields{
		"nodeId":    req.Header.NodeId,
		"fhIn":      req.FhIn,
		"offIn":     req.OffIn,
		"nodeIdOut": req.NodeIdOut,
		"fhOut":     req.FhOut,
		"offOut":    req.OffOut,
		"len":       req.Len,
		"flags":     req.Flags,
	}).Debug("CopyFileRange")
	toFuseInHeader(req.Header, &header)

	writen, st := s.fs.CopyFileRange(ctx.Done(), &fuse.CopyFileRangeIn{InHeader: header, FhIn: req.FhIn, OffIn: req.OffIn, NodeIdOut: req.NodeIdOut, FhOut: req.FhOut, OffOut: req.OffOut, Len: req.Len, Flags: req.Flags})
	if st == fuse.ENOSYS {
		return nil, status.Errorf(codes.Unimplemented, "method CopyFileRange not implemented")
	}
	return &pb.CopyFileRangeResponse{Written: writen, Status: &pb.Status{Code: int32(st)}}, nil
}
